Safety-envelop.



H. M. HILL.

SAFETY ENVBLOP.

APPLICATION FILED SEPT. 2, 191a.

Patented Mar.17,1914

WITNESSES 'rar FFFQE.

HERVIE M. HILL, OF ACHILLES, KANSAS.

SAFETY-ENVELOP.

Specification of Letters Patent.

Patented Mar. 17, 1914.

To all whom it may concern Be it known that I, Hnnvrn M. HILL, a citizen of the United States, residing at Achilles, in the county of Rawlins and State of Kansas, have invented certain new and useful Improvements in Safety-Envelops; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to envelops, and more particularly to the class of safety envelops.

One of the principal objects of my invention is to provide an envelop which when sealed, cannot be unsealed without tearing portions of the envelop, and thus making it known that the same has been tampered with.

Another object is to generally improve the construction of envelops of this class.

A further object is to provide an envelop which will be simple, very eflicient in operation, and comparatively inexpensive to manufacture.

With these and other objects in view, the invention consists in the construction, combination and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which like reference characters indicate like parts throughout the several views, and in which,

Figure 1, represents an elevational view of the envelop in sealed condition. Fig. 2, represents a view of the envelop showing one of the steps in the process of sealing the same. Fig. 3, represents a view of the envelop showing another step in the process of sealing the same. Fig. 4, represents an envelop in extended unsealed position, and Fig. 5, represents a transverse sectional view on the line 55 of Fig. 1.

In constructing an envelop according to my invention, it is my idea to so arrange the parts of the envelop that once it has been sealed it will be impossible to open the same or to get at the contents of the envelop without tearing or laeerating some of the parts, and thus making it known to the recipient of the envelop that the same has been tampered with, and to this end I form the envelop from a sheet of material in the form shown in Fig. 4, 5 representing the back of the envelop, 6 the end flaps, 7 the top flap, and 8 the bottom flap.

The back 5, is preferably rectangular in shape, and the end flaps 6, are square, and are slitted from the top edges to about m dway of the end flaps, said slits represented at 9, occurring at a short distance inwardly of the outer edges of the end flaps and forming locking tabs 10. The bottom flap S, has its side edges beveled as at 11, and is formed with a substantially rectangnlar projection 12, said bottom flap provided with a slit l3, mid-way between the lower edge of back 5, and the lower edge of projection 12, and slit 13 is in length substantially equal to the combined width of tabs 10. Top flap 7, is formed similarly to flap 8, and is provided with a sealing tongue 14, equal in width to the length of slit 13. The edges of flaps 7, and 8, are gummed as represented, as are also the end edges of projection 12, and the sealing tongue 14, is guinmed, the gum extending in a line with said tongue to the upper edge of back 5. Flaps 7, and 8, and projection 12, and tongue 14, are gummed only on their inner faces, or those faces which are directed toward back 5, when the envelop is in folded position. Folding lines 15, connect the meeting points of the edges of flaps 6, 7, and 8, and said lines indicate where the blank is to be folded.

In sealing the envelop, flaps 6, are first folded inwardly as indicated in Fig. 3, so that their outer edges will lie in juxtaposition on the vertical medial line of back 5; flap 8, is then folded upwardly to lie against the outer faces of flaps 6; and tabs 10, are then inserted through slit 13, as shown in Fig. 2, so that the tabs will lie against the outer face of projection 12, and the gum on flap 8, and projection 12, is then moistened to secure said flap and projection against the outer faces of flaps 6. Top flap 7 and tongue 14, are then gummed and said flap is folded downwardly, tongue 14, being inserted through slit 13, as shown in Fig. 1, thus sealing said flap against the outer faces of flaps 6, and against the outer faces of tabs 10, and sealing tongue 14, against the outer faces of flaps 6, along the meeting edges of their lower portions. When thus sealed, the contents of the envelop, which will previously have been laid on the inner face of back 5, will be thoroughly protected from accidental loss, it being impossible to get to the contents except by tearing some portion of the envelop.

Although I have described the preferred embodiment of my invention, I may desire to make such changes in the construction, combination and arrangement of parts, as do not depart from the spirit of the invention and the scope of the appended claims.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters-Patent is:

l. A safety envelop comprising a back, side flaps, aid side flaps being slit from their upper edges downwardly to the middle portion thereof, said slits occurring in spaced relation to the ends of said flaps to form tabs, said side flaps adapted to be folded inwardly on said back, a bottom flap adapted to be folded upwardly on said side flaps, said bottom flap provided with a cross slit through which said tabs are adapted to extend, a top flap adapted to be folded downwardly on said side flaps and projection tabs, said top flap provided with a tongue adapted to extend through said cross slit against the lower contiguous portions of said side flaps.

2. A safety envelop comprising a back, side flaps, said side flaps slitted to form tabs at the outer edges thereof, said side flaps adapted to be folded inwardly against said back, the outer edges of said side flaps lying in contiguous relation when so folded, a lower flap adapted to be folded upwardly on said side flaps, said lower flap provided with a projection, said lower flap provided with a cross slit spaced from the lower edge of said projection, said tabs adapted to extend through said slit when said'bottom flap is folded against said side flaps, said tabs when extending through said slit lying against said projection, a top flap adapted to be folded downwardly on said side flaps and tabs, said top flap provided with a tongue adapted to extend through said cross slit and lie against the lower contiguous edge portions of said side flaps, said upper and lower flaps being gummed at their edges, the opposite edges of said projection being gummed, said tongue being gummed, said top flap being gummed on the line with said tongue to the upper edge of said back, said gummed portions occurring on the inner faces of said flaps and contiguous portions.

In testimony whereof I have signed my name to this specification in the presence of two subscrlbing witnesses.

HERVIE M. HILL. Witnesses JAMES L. FInLns, PEARL B. BACON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

